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Can't remember that one regex? Email, URL, password, IP… the 10 patterns you'll actually use. No PhD in hieroglyphics required.

Cheat Sheet → 📚

When should you actually use Base64? APIs, data URIs, JWTs, email… 5 real use cases explained with code. Plus the one time you should never use it.

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Records or POCOs? Don't guess — know the difference. JSON → C# the right way. Source generators, naming policies, nullable types — all covered.

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CREATE TABLE → C# in seconds, not hours. EF Core entities, POCOs, or records — with perfect type mapping & data annotations.

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Minified mess? We've all been there. JSON, XML, SQL, CSS — formatting best practices that save your sanity and your code reviews.

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%20 or +? encodeURI or encodeURIComponent? URL encoding finally explained. 8 characters that break URLs and how to handle them.

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Still using MD5? Here's why you probably shouldn't. SHA256 vs MD5 — security, speed, and real-world use cases compared side by side.

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What's actually inside that JWT token? Header, payload, signature — decoded & explained. Debug auth issues like a pro.

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HEX, RGB, or HSL — which one should you use? Spoiler: HSL is the designer's secret weapon. Color format deep dive with CSS tricks.

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1772694478 — what date is that? Unix timestamps, ISO 8601, RFC 2822 — all formats explained with JS, C# & Python examples.

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